In Confluence, changing the Formatting and International Settings Date format settings seems to make no difference on the date picker macro.

Before changing, using the "//" command in edit mode lets me pick a date from the calendar. That date renders as dd MMM yyyy. Changing the date format in the Formatting and International Settings area as follows:

Date Time Format yyyy-MM-dd HH:mm
Date Format yyyy-MM-dd

makes zero difference on the output of that control. Is there something I'm missing? Due to the way Confluence doesn't properly sort dates, this is a big deal!